.header {
    width: 100%;
    height: 1.706667rem;
    background-color: #fff;
    border-bottom: 1px solid #b2b2b2;
    font-size: 0.453333rem;
    color: #333;
    text-align: center;
    line-height: 1.706667rem;
    font-weight: bold;
}